| HPAC | Hazard Prediction Analysis Code | 危险预报分析代码 |
| HPAC | Heating/Piping/Air Conditioning | 暖通空调管道/ |
| HPAC | Heating, Plumbing and Air Conditioning | 供暖、管道和空调 |
| HPAC | Hyde Park Art Center (Chicago) | 海德公园艺术中心（芝加哥） |
| HPAC | High-Pressure Air Compressor | 高压空气压缩机 |
| HPAC | Health Promotion Access Catalogue (UK) | 健康促进访问目录（英国） |
| HPAC | Human Powered Alien Craft | 人类驱动的外星飞船 |
| HPAC | Historic Properties Assistance Contribution | 历史财产援助贡献 |
| HPAC | Hazard Prediction and Assessment Capability | 危险预测和评估能力 |
| HPAC | Historic Preservation Advisory Committee | 历史保护咨询委员会 |
| HPAC | Health Policy Advisory Center | 卫生政策咨询中心 |
| HPAC | Hawker Pacific Aerospace | 霍克太平洋航空公司 |
| HPAC | Hazards Prediction And Assessment Capability | 危险预测和评估能力 |
| HPAC | Havelock Performing Arts Center | 哈维洛克表演艺术中心 |